Segmented vertical assembling method and system for jacket

Abstract

The invention provides a segmented vertical assembly method and system for a jacket, and the method comprises the steps: building a plurality of segments of the jacket in a horizontal assembly manner, and splitting the segments according to the maximum lifting capacity of a tower; and for each section, the lifting points on the two sides of the section are controlled through the first tower and the second tower, so that the section is turned over from the horizontal type to the vertical type, if the section is the first section, the section is placed at the storage position, otherwise, the section is in butt joint with the assembly body located at the storage position till assembly of all the sections is completed, and the jacket is obtained. And the assembled body is an assembled segment combination. The requirements for reducing the construction cost, reducing the construction operation risk, improving the construction efficiency and improving the construction weight of the jacket can be met at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power, and in particular to a method and system for vertically assembling a conductor frame in sections. Background Art

[0002] At present, large-scale units have become a distinctive feature of the development of offshore wind power. By applying larger-scale wind turbines, the occupation of sea areas can be effectively reduced, the power generation efficiency can be significantly improved, and the cost of installation and construction can be reduced, thereby promoting the reduction of the overall cost of the project. In addition, due to its superior adaptability, large-scale jackets can better cope with complex environmental conditions such as the deep sea, providing solid support for the layout of offshore wind power in deep and deep sea areas. However, with the continuous increase in the weight of the jacket structure, the requirements for technical support and quality control in its construction process are also increasing, which undoubtedly puts higher requirements on the jacket foundation construction manufacturers.

[0003] Commonly used jacket construction methods are divided into vertical construction and horizontal construction, as follows:

[0004] (1) Vertical construction is to assemble the segments from bottom to top using a crawler crane, and finally form a complete and vertical jacket. However, when using the vertical construction process, the jacket segments need to be docked in the height direction. During this process, if the segment is too heavy, the performance requirements for the lifting equipment will be increased, thereby increasing the cost of the lifting equipment. On the contrary, if the segment is too light, although the requirements for the lifting equipment can be reduced, the number of segments will increase, and the number of segment docking interfaces will increase accordingly, which will undoubtedly reduce the overall construction efficiency. At the same time, when the segments are docked, it is necessary to use an aerial work vehicle or build a scaffolding at the joint to build a working platform. However, when carrying out construction work on an aerial platform, the construction quality and efficiency are often difficult to be effectively guaranteed, and this move is also accompanied by significant construction risks.

[0005] (2) Horizontal construction is to assemble the sections in a lying position, and then use a dedicated turning device to turn the jacket from the lying position to the vertical position. However, when using the horizontal construction process, the maximum weight of the jacket constructed is limited by the lifting capacity of the dedicated turning device. In order to meet the development of large-scale jackets, it is necessary to update the dedicated turning equipment, that is, the horizontal construction has the problem of jacket weight limitation. Summary of the invention

[0006] In order to solve the above problems in the prior art, the present invention provides a method and system for vertically assembling a conductor frame in sections, so as to simultaneously meet the requirements of reducing construction costs, reducing construction operation risks, improving construction efficiency and increasing the construction weight of the conductor frame.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] In a first aspect, the present invention provides a method for vertically assembling a jacket in sections, comprising the steps of:

[0009] A plurality of sections of the jacket are constructed by horizontal assembly, and the number of the sections is divided according to the maximum lifting capacity of the jacket;

[0010] For each segment, the first tower and the second tower are used to control the suspension points on both sides of the segment respectively, so that the segment is turned from a horizontal position to a vertical position. If the segment is the first segment, the segment is placed in a storage position, otherwise the segment is docked with the assembly in the storage position until all the segments are assembled to obtain a catheter rack, wherein the assembly is a combination of assembled segments.

[0011] The beneficial effects of the present invention are as follows: the present invention constructs multiple segments of the conductor frame in a horizontal assembly manner, and then performs vertical docking after the segments are turned over by a tower structure. Therefore, the horizontal assembly construction method not only improves the work efficiency, but also ensures the stability and reliability of the construction quality; the use of a tower structure for vertical docking shows significant advantages in terms of lifting weight and lifting height compared to lifting machinery such as crawler cranes, so in actual application, it can significantly reduce the number of segments required and effectively reduce the construction risk during the segment interface docking process, thereby significantly improving work efficiency and reducing overall costs; in addition, compared to the construction and turning over of the entire conductor frame, by splitting the segments, a heavier conductor frame can be successfully built without the need to update equipment. Thereby, the requirements of reducing construction costs, reducing construction operation risks, improving construction efficiency and increasing the construction weight of the conductor frame are met at the same time.

[0012] Optionally, the controlling the suspension points on both sides of the segment by the first tower and the second tower respectively so that the segment is turned from a horizontal position to a vertical position comprises the following steps:

[0013] Obtaining a first hoisting speed of the first tower and a second hoisting speed of the second tower according to a preset height of the segment and starting heights of hoisting points on both sides of the segment;

[0014] The first tower controls a first lifting point on one side of the segment at a first lifting speed, and the second tower controls a second lifting point on the other side of the segment at a second lifting speed, so that the segment is turned from a horizontal position to a vertical position.

[0015] Optionally, the first lifting speed V1 and the second lifting speed V2 are respectively as follows:

[0016] V1=(H 12 -H 11 ) / t

[0017] V2=(H 22 -H 21 ) / t

[0018] t~(T1,T2)

[0019] Among them, H 12 is the preset height of the first hanging point, H 11 is the starting height of the first hanging point, H 22 is the preset height of the second hanging point, H 21 is the starting height of the second lifting point, t is the lifting time, T1 and T2 are the minimum and maximum time values ​​obtained by the first tower and the second tower according to the height to be lifted and the lifting speed range of the first tower and the second tower.

[0020] It can be seen from the above description that by controlling the lifting speed of the two lifting points, the segment can be turned over faster and more accurately and reach the preset height.

[0021] Optionally, the first tower is higher than the second tower, the first suspension point is located above one side of the segment when it is in a vertical position, and the second suspension point is located below the other side of the segment when it is in a vertical position.

[0022] Optionally, the method of constructing a plurality of sections of the jacket by horizontal assembly includes the following steps:

[0023] Construct horizontal segments, and use precision measuring equipment to monitor the real-time accuracy of the segment interfaces. Adjust the segment construction process based on the accuracy monitoring results until all segments that meet the interface accuracy requirements are completed.

[0024] According to the above description, the accuracy and consistency of the overall construction precision of the jacket can be ensured through precision monitoring.

[0025] Optionally, the method of constructing a plurality of sections of the jacket by horizontal assembly further comprises the following steps:

[0026] The segments are pre-assembled using horse plates so that the construction process of the segments can be adjusted according to the pre-assembly results.

[0027] According to the above description, by using the horse plate to temporarily connect the segments, it is equivalent to forming a complete overall structure on the ground, which is more conducive to the control of overall accuracy. This pre-assembly process can effectively avoid the potential problem of difficult to ensure interface accuracy in traditional vertical installation.

[0028] Optionally, the segments are placed on storage locations by means of modular trolleys.

[0029] Optionally, the step of docking the segment with the assembly in the storage location comprises the steps of:

[0030] Otherwise, the assembly at the storage position is moved to the bottom of the segment by the modular trolley for docking. After the docking is completed, the new assembly is moved to the storage position by the modular trolley.

[0031] Optionally, the segment is placed on the storage position by moving the first tower and the second tower, and the step of docking the segment with the assembly at the storage position comprises the steps of:

[0032] Otherwise, the segments are moved to the top of the assembly at the storage position for docking by moving the first tower and the second tower. After the docking is completed, the first tower and the second tower are moved to the lifting position.

[0033] In a second aspect, the present invention provides a segmented vertical assembly system for a jacket, comprising:

[0034] The first tower and the second tower are used to control the suspension points on both sides of the segment respectively, so that the segment is turned from a horizontal position to a vertical position, and control the segment to dock with the assembly at the storage position, the segment is a split part of the jacket and is constructed by horizontal assembly, and the assembly is a combination of assembled segments;

[0035] A moving mechanism is used to transport the segments.

[0036] The second aspect provides a system for vertically assembling a jacket in sections, which refers to the description of the method for vertically assembling a jacket in sections provided in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of a flow chart of a method for vertically assembling a jacket in sections according to an embodiment of the present invention;

[0038] Figure 2 It is a schematic diagram of the structure of the conductor frame in a horizontal position involved in an embodiment of the present invention;

[0039] Figure 3 It is a structural schematic diagram of a movable lower segment of a jacket segment vertical assembly structure according to an embodiment of the present invention;

[0040] Figure 4 It is a structural schematic diagram of a jacket segment vertical assembly structure for lifting a lower segment according to an embodiment of the present invention;

[0041] Figure 5 It is a schematic structural diagram of a segmented vertical assembly structure of a conductor frame according to an embodiment of the present invention, in which the lower segment is in a vertical position after being flipped over;

[0042] Figure 6 It is a structural schematic diagram of a movable upper segment of a jacket segment vertical assembly structure according to an embodiment of the present invention;

[0043] Figure 7 It is a structural schematic diagram of a jacket segment vertical assembly structure hoisting an upper segment involved in an embodiment of the present invention;

[0044] Figure 8 It is a schematic structural diagram of a segmented vertical assembly structure of a conductor frame according to an embodiment of the present invention, in which the upper segment is flipped and in a vertical position;

[0045] Fig. 9 It is a structural schematic diagram of a segmented vertical assembly structure of a jacket according to an embodiment of the present invention, in which an upper segment is moved to a lower segment;

[0046] Fig.10 It is a structural schematic diagram of a segmented vertical assembly structure of a conductor frame according to an embodiment of the present invention driving an upper segment to connect with a lower segment.

[0047] [Description of Reference Numerals]

[0048] 1. First tower; 2. Second tower; 3. Modular trolley;

[0049] 100. catheter rack; 101. upper segment; 102. lower segment; 103. first hanging point; 104. second hanging point. DETAILED DESCRIPTION

[0050] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0051] Embodiment 1

[0052] Please refer to Figures 1 to 10 The present embodiment provides a method for vertically assembling a conductor frame in sections, which is applied to the assembly of offshore wind turbines. The method comprises the following steps:

[0053] S1. A plurality of segments of the jacket 100 are constructed by horizontal assembly, and the number of segments is divided according to the maximum lifting capacity of the jacket;

[0054] In this embodiment, the horizontal assembly method of constructing multiple segments of the jacket 100 in step S1 includes the following steps:

[0055] S11. According to the requirements of the project design drawings, specifications, technical agreements, etc., and taking into account the lifting capacity of the vertical assembly system, the jacket 100 is split into several segments, the jacket 100 structure is disassembled in segments, and detailed construction drawings that can be used by the manufacturing department are drawn. Then, based on the detailed construction drawings, the raw materials are processed into component products that can be used in the next process by cutting, welding, painting, etc.

[0056] When the construction weight of the jacket 100 far exceeds the maximum lifting capacity of the existing vertical assembly system, the jacket 100 is divided into multiple sections according to the maximum lifting capacity, and the weight of each jacket 100 does not exceed the maximum lifting capacity. Figure 2 As shown, the catheter frame 100 of this embodiment is divided into two sections, namely, an upper section 101 and a lower section 102. In other embodiments, it can be divided into three or four sections accordingly.

[0057] S12, construct horizontal segments, and use precision measuring equipment to monitor the accuracy of the interface of the segments in real time, and adjust the construction process of the segments according to the accuracy monitoring results until all segments that meet the interface accuracy requirements are completed;

[0058] The precision measurement device may be a theodolite, which strictly follows precision measurement standards when performing real-time precision monitoring. Once deviations occur in the measurement data, the construction process will be adjusted immediately based on these data, thereby ensuring the accuracy and consistency of the overall construction precision of the jacket 100.

[0059] S13. At the same time, the segments are pre-assembled using horse plates to adjust the construction process of the segments according to the pre-assembly results.

[0060] Among them, by using horse plates to temporarily connect the segments, it is equivalent to forming a complete overall structure on the ground, which is more conducive to the control of overall accuracy. This pre-assembly process can effectively avoid the potential problem of difficult to ensure interface accuracy in traditional vertical installation.

[0061] S2. For each segment, the first tower 1 and the second tower 2 are used to control the suspension points on both sides of the segment respectively, so that the segment is turned from a horizontal position to a vertical position. If the segment is the first segment, the segment is placed in a storage position, otherwise the segment is docked with the assembly in the storage position until all the segments are assembled to obtain the catheter rack 100, where the assembly is a combination of assembled segments.

[0062] In this embodiment, if Figure 3 As shown, the first tower 1 is higher than the second tower 2, that is, the first tower 1 is used to lift the high point of the segment, and the second tower 2 is used to lift the low point of the segment. Such a different arrangement is conducive to reducing manufacturing costs. Figure 4 and Figure 5 As shown, the first hanging point 103 is located above one side of the segment when it is in a vertical position, and the second hanging point 104 is located below the other side of the segment when it is in a vertical position, so that the segment can be flipped when the two move up and down. In other embodiments, the first hanging point 103 can also be located at the top surface of the segment when it is in a vertical position and biased to one side, and the second hanging point 104 can be located at the bottom surface of the segment when it is in a vertical position and biased to the other side.

[0063] Among them, the existing vertical construction usually builds vertical segments, so that the crawler crane can directly lift without turning over. In this embodiment, horizontal segments are built, which complement the double tower lifting structure and complete the turning during the lifting process, thereby retaining the advantages of horizontal construction, and the connection accuracy can be included through accuracy monitoring and pre-connection, and a heavier jacket 100 can be successfully built without upgrading special turning equipment.

[0064] In this embodiment, in step S2, the first tower 1 and the second tower 2 are used to control the suspension points on both sides of the segment respectively, so that the segment is turned from a horizontal position to a vertical position, which includes the following steps:

[0065] S21, obtaining a first lifting speed of the first tower 1 and a second lifting speed of the second tower 2 according to a preset height of the segment and starting heights of lifting points on both sides of the segment;

[0066] Among them, the first lifting speed V1 and the second lifting speed V2 are as follows:

[0067] V1=(H 12 -H 11 ) / t

[0068] V2=(H 22 -H 21 ) / t

[0069] t~(T1,T2)

[0070] Among them, H 12 is the preset height of the first hanging point, H 11 is the starting height of the first hanging point, H 22 is the preset height of the second hanging point, H 21 is the starting height of the second lifting point, t is the lifting time, T1 and T2 are the minimum and maximum time values ​​obtained by the first tower and the second tower according to the height to be lifted and the lifting speed range of the first tower and the second tower.

[0071] The first tower 1 and the second tower 2 simultaneously lift the segment. This embodiment calculates the lifting speed of the two towers by limiting the lifting time of the two towers to be consistent, thereby achieving one-step lifting and flipping. The lifting height is fixed, and the lifting speed range of the first tower 1 and the second tower 2 is fixed. By calculating the time range required for the two towers to complete the corresponding height, the overlapping time range of the two towers can be selected.

[0072] S22, the first tower 1 controls the first lifting point 103 on one side of the segment at the first lifting speed, and the second tower 2 controls the second lifting point 104 on the other side of the segment at the second lifting speed, so that the segment is turned from horizontal to vertical.

[0073] In this embodiment, the segment is placed on the storage position by the modular trolley 3, and the step S2 of docking the segment with the assembly at the storage position includes the following steps:

[0074] Otherwise, the modular trolley 3 moves the assembly at the storage position to the bottom of the segment for docking. After the docking is completed, the modular trolley 3 moves the new assembly to the storage position.

[0075] Alternatively, the first tower 1 and the second tower 2 are moved to move the segment to the top of the assembly at the storage position for docking. After the docking is completed, the first tower 1 and the second tower 2 are moved to the lifting position.

[0076] The jacket 100 in this embodiment is composed of an upper segment 101 and a lower segment 102, and the segments are moved by the modular trolley 3. The lower segment 102 is the first segment, so Figures 3 to 5 It can be seen that the lower segment 102 is moved between the first tower 1 and the second tower 2 by the modular trolley 3, and the two lifting points of the lower segment 102 are lifted by the first tower 1 and the second tower 2 respectively, so that it is flipped from horizontal to vertical. Afterwards, the lower segment 102 is moved to the storage position by the modular trolley 3. Figures 6 to 10 It can be seen that the upper segment 101 is moved between the first tower 1 and the second tower 2 by the modular trolley 3, and the two lifting points of the upper segment 101 are respectively lifted by the first tower 1 and the second tower 2 to flip it from horizontal to vertical, and then the lower segment 102 is precisely docked with the upper segment 101. In other embodiments, if there are three segments, the first segment and the second segment are docked to form an assembly, which is first moved to the storage position, and then the third segment is lifted, and then the previous assembly is moved over to complete the docking of the third segment. If there are four or five segments, the docking of the segments and the assembly is repeated until the overall construction of the jacket 100 is successfully completed.

[0077] Embodiment 2

[0078] Please refer to Figures 1 to 10 The present embodiment provides a method for vertically assembling a conductor frame in sections, which is applied to the assembly of offshore wind turbines. The method includes:

[0079] The first tower 1 and the second tower 2 are used to control the suspension points on both sides of the segment respectively, so that the segment can be turned from horizontal to vertical, and the segment is controlled to be docked with the assembly at the storage position. The segment is a split part of the jacket 100 and is constructed by horizontal assembly. The assembly is a combination of assembled segments.

[0080] A moving mechanism is used to transport the segments.

[0081] Among them, the moving mechanism of this embodiment is a modular vehicle 3.

[0082] It should be noted that a modular trolley 3 can also be arranged under the first tower 1 and the second tower 2 to enable them to move. Therefore, the movable structure here can be a modular trolley 3 under the first tower 1 and the second tower 2, which realizes the transportation of segments by driving the movement of the first tower 1 and the second tower 2, or it can be a modular trolley 3 that independently transports segments.

[0083] In summary, the present invention constructs multiple segments of the conductor frame 100 in a horizontal assembly manner, and uses precision monitoring and pre-installation technology to control the docking accuracy of the constructed segments. After that, the segments are turned over by the tower structure, and then vertical docking is implemented, thereby simultaneously meeting the requirements of reducing construction costs, reducing construction operation risks, improving construction efficiency and increasing the construction weight of the conductor frame 100.

[0084] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0085] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0086] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0087] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0088] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A method for vertically assembling a pipe frame in sections, characterized in that: Includes steps: A plurality of sections of the jacket are constructed by horizontal assembly, and the number of the sections is divided according to the maximum lifting capacity of the jacket; For each segment, the first tower and the second tower are used to control the suspension points on both sides of the segment respectively, so that the segment is turned from a horizontal position to a vertical position. If the segment is the first segment, the segment is placed in a storage position, otherwise the segment is docked with the assembly in the storage position until all the segments are assembled to obtain a catheter rack, wherein the assembly is a combination of assembled segments.

2. A method for vertically assembling a pipe frame in sections according to claim 1, characterized in that: The method of controlling the suspension points on both sides of the segment by the first tower and the second tower respectively so that the segment is turned from a horizontal position to a vertical position comprises the following steps: Obtaining a first hoisting speed of the first tower and a second hoisting speed of the second tower according to a preset height of the segment and starting heights of hoisting points on both sides of the segment; The first tower controls a first lifting point on one side of the segment at a first lifting speed, and the second tower controls a second lifting point on the other side of the segment at a second lifting speed, so that the segment is turned from a horizontal position to a vertical position.

3. A method for vertically assembling a pipe frame in sections according to claim 2, characterized in that: The first lifting speed V1 and the second lifting speed V2 are respectively as follows: V1=(H 12 -H 11 ) / t V2=(H 22 -H 21 ) / t t~(T1,T2) Among them, H 12 is the preset height of the first hanging point, H 11 is the starting height of the first hanging point, H 22 is the preset height of the second hanging point, H 21 is the starting height of the second lifting point, t is the lifting time, T1 and T2 are the minimum and maximum time values ​​obtained by the first tower and the second tower according to the height to be lifted and the lifting speed range of the first tower and the second tower.

4. A method for vertically assembling a pipe frame in sections according to claim 2, characterized in that: The first tower is higher than the second tower, the first hanging point is located above one side of the segment when it is in a vertical position, and the second hanging point is located below the other side of the segment when it is in a vertical position.

5. A method for vertically assembling a pipe frame in sections according to any one of claims 1 to 4, characterized in that: The method of constructing multiple sections of the conductor frame by horizontal assembly includes the following steps: Construct horizontal segments, and use precision measuring equipment to monitor the real-time accuracy of the segment interfaces. Adjust the segment construction process based on the accuracy monitoring results until all segments that meet the interface accuracy requirements are completed.

6. A method for vertically assembling a pipe frame in sections according to claim 5, characterized in that: The method of constructing multiple sections of the jacket by horizontal assembly also includes the following steps: The segments are pre-assembled using horse plates so that the construction process of the segments can be adjusted according to the pre-assembly results.

7. A method for vertically assembling a conductor frame in sections according to any one of claims 1 to 4, characterized in that: The segments are placed on storage locations by means of modular trolleys.

8. A method for vertically assembling a pipe frame in sections according to claim 7, characterized in that: Otherwise, docking the segment with the assembly at the storage location comprises the steps of: Otherwise, the assembly at the storage position is moved to the bottom of the segment by the modular trolley for docking. After the docking is completed, the new assembly is moved to the storage position by the modular trolley.

9. A method for vertically assembling a conductor frame in sections according to any one of claims 1 to 4, characterized in that: The segment is placed on the storage position by moving the first tower and the second tower, and the step of docking the segment with the assembly at the storage position comprises the steps of: Otherwise, the segments are moved to the top of the assembly at the storage position for docking by moving the first tower and the second tower. After the docking is completed, the first tower and the second tower are moved to the lifting position.

10. A vertical assembly system for a pipe frame in sections, characterized in that: include: The first tower and the second tower are used to control the suspension points on both sides of the segment respectively, so that the segment is turned from a horizontal position to a vertical position, and control the segment to dock with the assembly at the storage position, the segment is a split part of the jacket and is constructed by horizontal assembly, and the assembly is a combination of assembled segments; A moving mechanism is used to transport the segments.

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